Colorimeter



F. G. SPINDLER. COLORIMETEB.

10N FILED Au A .4, 1919A 1,353,500. Patented Sept. 21, 1920.

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M /MNVENTOR F. G. SPINDLER.

COLORINIETER. APPLlcAfoN FILED AuG.4, 1919A Patented Sept. 2l, 1920.

3 SHEETS-SHEET 2.

INVENTOR F. G. SPINDLEH.

COLORIMETER. APPLICATION FILED AUG.4, 1919.

. 1,353,500. Pandsept. 21,1920.

s SHEETS-SHEET a.

INVENTOR 'front elevation of my colorimeter,

vtaken out and N. Y., -ASSIGNOR T0 ALFRED TRAEGER, 0F

NEW JERSEY. y

COLOBIMETER.

Latas.

spcification of Letters Patent.

rateatea sept. er, ieee.

Appiication mea August 4, i919. serial No. 315,260.-

T o all whom it may concern,

at the same time through a microscope.

In this type ofvcolorimeters there has been great loss of time causedbythe necessity of constantly adjusting and readjusting' thevperpendicular position of the two containers holding the liquids to becompared; This dificulty is entirely overcome in my device, which makesit possible for the `personusing it to change the perpendicularpositionl o either containerwhile observing the same through themicroscope.

Referring to the drawings,

Figure 1 :is a perspective of my colorimeter;

Fig. .2 is a cross section and theJ cover is a side sectional view oFig. 2 on the line 3--3; Fig. 4 is a' top plan sectional view ofFig. 2on the line l1---4; Fig. 5 is a rear elevation of my. colorimeter withthe cover'removed; 6 is a bottom plan view of the'mirror; ig. 7 is apers ective of one of the containers with a p ortion broken away ;Y Fig.8 is a top plan view of one of the platforms, and Fig. 9 is a side viewof the same.

In the drawings 10 is a base to which is rigidly secured `aperpendicular support 11. At 12 a bracket 13 is rigidly secured to thetop edge of the su port 11,' and a circular flange 14 cut out o thebracket 13 is adapted to receive a microscope l15 of the usual two lensconstruction.v A hole 16 isy cutK through the bracket 13 to permit thelight to pass through into the microscope, and also to permit theoperator to look through. prism support 17 is rigidl secured to thebracket 13 and cap mem ers 18 at each upper portion in removed; Fig. 3

end of said support 17 are adapted to be' readily removed by removingscrews 2()A so that glass' prisms 19 can be inserted or cleaned. Support17 has downturned circular flanges 21 into which glass plungers 22having bottoms 22a fused to tubular portions 22 and having metal flanges23 are Be it known' that I- FERDINAND G. Srila; Germany,

. edges of the holes 29 so ing screws 51 to cept that adapted to befastened by means of ,screws 24.

Two guide members 25 are secured to the perpendicular support 11 bymeans of are cut in onthe sides, so as" to 'be narrower atthe sidesnearer the support 11, so that platforms 27 will fit over the same atthe open ends 28 and slide thereon. The platforms 27 also have holes 29lcut through them so that light from below may pass up through, and theoperator look through them. Grooves are cut around the as to 30 on whichtransparent containers 31, are adapted to be placed. Containers 31 haveseparate bottoms 32 secured thereto by fus. or otherwise, same asplungers 22, so that the exact thickness and lane surface of the bottomscan be more perfectly regulated. The platforms 27 are slotted at 33 soas' to permit tightening of the sides of the oening 28 onthe slides edby means of the adjustmentscrews 35. Indicators 34 are rigidly securedto the platforms 27 sothat 36 lin the support 11 and indicate theperpendicular positions of the platforms 27 on a scale 37 which isrigidly secured to the back of the support ,11.

Bell crank levers 38 having `handles 41 are pivoted in the support 11below the ylower ends of the slides 25 on are connected to the platforms27 by means of the links 40 which are connected so that they turn freelat each end. The bell crank levers 38 have ong levers 42 rigidly securedto the shafts 39 by means of set screws 43 vand short levers 44 rigidlysecured to the shafts 39. l

A mirror 45 is mounted in the support 11 on a l"shaft 46 by means of anut 47 and a spring washer 48 below the shafts 39, so that i't can betilted. as desired at either end. The mirror 45 is also supported by thebearings 49 on the head of the T-shaft 46 so that it can be tilted downor up o`n its side edge.

A cover 50 ispivoted b means of pivot the side of t e support 11, sothat when closed it will shut out all light from the containers 31 andplungers .22, eX-

thrown up from the mirror The cover 50 is hinged at 52 so that it can bepartly opened when desired.

In using my colorimeter a known color density is placed in one ofsolution of the 25 which can be e ectthey project through slots shafts39, and

containers, and the platform on which said container rests is raised bypulliiig up on the vhandle 4l of the lever 38 until the plunger 22 is atthe required depth in the solution as indicated by the indicator 34 onthe scale 37.

The solution tobe tested is then placed in the other container andlraised in the same .way until the color -of bothsolutions isthe vInorderv same to the eye of theoperator. to get this container at theproper position to obtain the same 'color on each half ofthe field ofvision of the operators eye it may be necessary to raise and lower thissecond container several. times until the vcolor is exactly the same,and this" the operator can do with one hand while he is observing theeffect through the microscope. .As soon as both halves 'of the field ofvision of the operators eye show the same color so that it appears likeone eld of vision then the reading of the second in'dicator can be takenon the scale 3 7, and this will give the color density of the solutionbeing tested.

The mirror 45 should be adjusted before a support, of lundercutguideways on the Iport above the Vthe standard, platforms front face ofthe support, platforms movable along the support and havingcontainerreceiving sockets and rear seats that slidably interit with theguideways, said platforms being slotted from the sockets to the seats,means for adjusting the platforms, and optical mechanism mounted on thesupterials supported bysaid platforms.

2. In a colorimeter, the combination with a support, of independentlyadjustable container carriers mounted on the support,

' optical mechanisms mounted on the support for observing materials inthe containers placed on the carriers, and a hood for wholly or partlyinclosing the containers mounted on the carriers, said hood beinghingedly mounted on'the support at one side of the carriers andcomprising hingedly `connected Walls.

3. In a 'co1orimeter, the combination with a base, ,of a standardmounted thereupon,

dovetailed guideways on the front side of having dovetail sockets thatslidably receive the guideways, rock shafts journaled in the lowervportion of the linked to the platforms, optical mechanism mounted onthe upper end of the standard forobserving materials carried by theplatforms, and a'hood forv partly or wholly in` closing the platformshingedly connected walls, one ofl which is hinged to one side of thestandard.

In testimon whereof I affix mIy si nature.

FE DINAND G. SP ER.

platform for observing ma# standard and having crank arms and comprising

